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spin [16.1K]
4 years ago
5

Something occurs when a liquid changes to a gas below its surface as well as on the surface

Chemistry
1 answer:
insens350 [35]4 years ago
6 0
What exactly are you asking?

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A
yuradex [85]

Answer:

the answer is (2.54cm in an inch, and 4 number of choices in this question)

Explanation:

An exact number is not rounded, and cannot be changed such as placing a different item on the scale it would change.

7 0
4 years ago
4) In a chemical change a _____________ substance forms.
Law Incorporation [45]
A complex substance forms when a chemical change takes place
8 0
3 years ago
Read 2 more answers
2. Which of the following combinations will react spontaneously under
telo118 [61]

Answer:

<h2>Hereis the correct answer </h2>

(A. Au3+ and CI2)

Explanation:

<h3>STUDY CORRECTION. </h3>
5 0
2 years ago
Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculate t
zlopas [31]
Ga₂O₃ + 2NaOH + 3H₂O = 2Na[Ga(OH)₄]

[Ga(OH)]⁻ + 3e⁻ = Ga + 4OH⁻

n(Ga)=It/(zF)

I=0.200 A
t=40.0 min=2400 s
z=3
F=96485.33 Kl/mol

n(Ga)=0.200*2400/(3*96485.33)=0.00166 =1.66*10⁻³ mol
8 0
3 years ago
What volume of NaOH(aq) would be needed to reach the equivalence point if the concentration of the added base were 0.290 M?
DiKsa [7]

Answer:

17.2mL are needed

Explanation:

<em>The pH curve for titration of 50.0 mL of a 0.100 M solution of hydrochloric acid</em>

<em />

A strong acid as HCl reacts with a strong base as NaOH producing water and a salt. The chemical equation is:

HCl + NaOH → H₂O + NaCl

<em>Where 1 mole of HCl reacts per mole of NaOH</em>

<em />

To solve this question we must find the moles of HCl added = Moles NaOH you must add to reach the equivalence point. With these moles and the molar concentration we can find the volume that would be needed as follows:

<em>Moles HCl:</em>

50.0mL = 0.0500L * (0.100moles / L) = 0.00500 moles HCl = Moles NaOH

<em>Volume NaOH:</em>

0.00500 moles NaOH * (1L / 0.290moles) = 0.0172L NaOH =

<h3>17.2mL are needed</h3>
3 0
3 years ago
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